BK1 is a new type of desiccant different from IG-3A in chemical composition and crystal structure. BK1 is made from kaolin, bentonite, attapulgite and active calcium—containing compounds. BK1 desiccant has the same physical and adsorption properties as IG-3A. For use in insulated glass, BK1 are low dust, low air desorption, high temperature rise, etc. BK1 has proven to be a successful material for drying insulated glass since the year 2000.

Technical data of BK1

Specification		Technical Parameter
Bead size, mm		Φ0.5-0.9mm	Φ1.0-1.6mm	Φ1.6-2.0mm
Moisture capacity(75%RH/25??/span>, 48h), %Wt      ≥		20~22	20~22	20~22
Air Desorption ( 70??/span>/4h, 250ml sample),ml   ≤		50	50	50
Bulk density, g/l		750/870	750-850	750/790
Crushing strength, N		~	5~10	5~15
Attrition loss, %Wt                          ≤		0.2	0.2	0.2
Dust, PPm                                 ≤		30	30	30
Temperature rise, ??/span>                         ≥		60	60	60
Loss on ignition??/span>575??/span>/3h??/span>,%Wt            ≤		1.5	1.5	1.5
Screening??/span>%Wt	<0.5/1.0/1.6	<0.5%	<0.5%	<0.5%
	0.5~0.9/1.0~1.6/1.6~2.0	>95%	>95%	>96%
	>0.9/1.0/2.0	<3%	<3%	<3%

Package: wood barrel with inner plastic bag, carton box or steel drumsh